I saw a post on another forum on these batteries from California Ebikes. The poster has some credibility with me, as I know he has done some customer service work for ebike vendors. They offer both name brand and generic cell batteries with warranty.

https://california-ebike.com/product...ory/batteries/

If I needed a battery, I might look at their generic cell models. I have two batteries that I bought in 2015 with generic Chinese cells that have worked well, plus one battery with name brand Samsung cells that was really disappointing.